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Article
Queue-Aware Resource Allocation for Multi-cell OFDMA Systems with QoS Provisioning
This paper proposes a queue-aware resource allocation algorithm which provides quality of service (QoS) guarantees. The proposed solution adopts a cross-layer design approach since it is aware of both users’ q...
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Article
Fair Radio Resource Allocation for MIMO OFDM-based Multicast Systems
This paper investigates the problem of resource allocation in a multiple-input multiple-output (MIMO) OFDM-based system, wherein multiple multicast groups exist. Multicasting is a transmission technique which ...
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Article
Statistical Properties for the Envelope and Phase of the α − η − μ Generalized Fading Channels
In this paper, a study on the statistical properties for the envelope and phase of both formats of the α − η − μ generalized fading channels is provided by deriving novel closed-form expressions. Specifically, a ...
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Chapter and Conference Paper
Efficient Resource Allocation Algorithm for Spatial Multiuser Access in MISO OFDMA Systems
The problem of user selection and resource allocation for the downlink of wireless systems operating over a frequency-selective channel is investigated. It is assumed that the Base Station (BS) uses many anten...
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Article
The α − λ − μ and α − η − μ Small-Scale General Fading Distributions: A Unified Approach
In this paper, a general small-scale fading model for wireless communications, that explores the nonlinearity and at the same time the inhomogeneous nature of the propagation medium, is presented, studied in t...
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Article
An Extended Loo Model with Inhomogeneous Scattering and its Statistical Properties
In this paper, an analytical model for a land mobile satellite channel is introduced that takes into consideration the Generalized Rice model for characterizing the small scale (fast) fading. The proposed mode...
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Article
A Modified Loo Model with Partially Blocked and Three Dimensional Multipath Scattering: Analysis, Simulation and Validation
This paper presents a novel mobile fading channel model, belonging to the class of Loo models, in which the multipath power arrives both in three dimensions (3-D) and in two angular sectors at the azimuth rece...
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Article
Open AccessErgodic Capacity for the SIMO Nakagami- Channel
This paper presents closed-form expressions for the ergodic channel capacity of SIMO (single-input and multiple output) wireless systems operating in a Nakagami-
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Article
A Generalized Modified Suzuki Model with Sectored and Inhomogeneous Diffuse Scattering Component
This paper presents a mixture stochastic process by multiplying a Weibull process with a lognormal one. The first one models the possible scattering non-uniformities of the channel, whereas the second accounts...
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Article
Open AccessNonregenerative Dual-Hop Cooperative Links with Selection Diversity
The end-to-end performance of dual-hop cooperative diversity systems equipped with nonregenerative relays and a selection combining receiver at the destination terminal over independent and nonidentical Nakagami-
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Article
Open AccessA New MAC Protocol with Pseudo-TDMA Behavior for Supporting Quality of Service in 802.11 Wireless LANs
A new medium access control (MAC) protocol is proposed for quality-of-service (QoS) support in wireless local area networks (WLAN). The protocol is an alternative to the recent enhancement 802.11e. A new prior...
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Chapter and Conference Paper
Wireless Transmissions with Combined Gain Relays over Fading Channels
We present a dual-hop relayed wireless communication system where the gain of the relay, called combined gain relay (CGR), is produced after combining the channel state information from both hops, depending on...